archive-access-cvs

[Michael S. <sta...@us...>]

Update of /cvsroot/archive-access/archive-access/projects/nutch/xdocs
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv23127

Added Files:
	steps_indexing_katrina.txt 
Log Message:

* steps_indexing_katrina.txt 
    Added. Notes on how I did indexing of Katrina.


--- NEW FILE: steps_indexing_katrina.txt ---
$Id: steps_indexing_katrina.txt,v 1.1 2005/09/08 17:48:48 stack-sf Exp $

Two crawls of Hurricane Katrina.  00 and 01.  Will start by indexing part of 00.

Here are all of the backup hosts w/ katrina crawl 00 ARCs on them:

    $ ~webcrawl/crawl-arc-cfg/db-arc-info \
        -like HURRICANE-KATRINA-2005-00%arc.gz | \
        awk '{print $2$4}' |grep -e -bu|sort|uniq
    crawldata0034a-bu.archive.org/1
    crawldata0035a-bu.archive.org/3
    crawldata0036a-bu.archive.org/0
    crawldata0037a-bu.archive.org/0

Now to mount these hosts.  Here's a little script to do it:

    #!/bin/sh
    # Pass name of file that hosts and name of collection to use as dir under
    # /mnt.
    if [ $# != 2 ]
    then
        echo "Usage: $0 HOSTS_FILE DIR_UNDER_MNT"
        exit 1
    fi
    for i in `cat $1`
    do
        mntpoint="/mnt/$2/$i"
        mkdir -p $mntpoint
        dev=`echo $i|sed -n -e 's/\//:\//p'`
        mount -t nfs -o ro,rsize=8192,wsize=8192,intr,nfsvers=2 $dev $mntpoint
    done

Counting ARCs:
    
    $ ~webcrawl/crawl-arc-cfg/db-arc-info \
        -like HURRICANE-KATRINA-2005-00%arc.gz | \
        awk '{print $2 " " $6}'|grep -e -bu|uniq|wc -l

There are 1010 in crawl 00 (uniq'ing, there are 1008).

Here is how I got a list of all files sorted:

    $ ~webcrawl/crawl-arc-cfg/db-arc-info \
        -like HURRICANE-KATRINA-2005-00%arc.gz | \
        awk '{print $2 " " $6}'|grep -e -bu| \
        awk '{print $2}'|sort|uniq> 00arcs.txt

I'll do first 100 for now (One segment).

    $ head -100 00arcs.txt > 00arcs.0-99.txt

I then made a directory to hold symlinks to the first 100:

    $ mkdir 00arcs.0-99
    $  for i in `cat ../00arcs.0-99.txt`; do find /mnt/katrina/ -type f \
        -name $i -exec ln -s {} \;;  done

Don't forget to edit the parse-ext plugin.xml so it points to the pdf parser
wrapper script.

I ran the indexing like this:

    $ nohup ./bin/indexarcs.sh -c katrina -s ~/katrina/00arcs.0-99/ \
    -d /2/katrina/nutch-data &> /2/katrina/indexing`date +%FT%H:%M`.log \
    < /dev/null &